Improvement in combined latch and lock



, lluted tapes datent Gtjyiiw.

Lette/rs Patent N 91,479, dated June 15, 1869.

IIPROVEMENT IN'CMBIND LATCH AND LOCK The Schedule referred to in theseLetters Patent and making part of the name.

.To all whom it lmay concern:

Be it known that I, ANTON OcHsNER, of New Haven, in the county of NewHaven, State of Connecticut, have invented a new and useful Improvementin Locks; and I do hereby declare the following tobe a full, clear, andexact description thereof, which will enable those skilled in the art tomake and use the same, reference being hadto the accompanying drawing,formming part of this specitcation, in which drawing- Figure l is aninterior view of a lock, to which I have applied my invention, part ofthe case being removed on VJthe tumbler-side of the lock, and theoperating-parts being shown in condition to be operated,

either by the key, or by an ordinary spindle, such as is common inknob-locks. x

Figure 2 is also an interior view, the operativeparts being arranged sothat the bolt can be operated only by the key.

Similar letters indicate corresponding parts.

This invention relates to the class of locks in which one and the samebolt is arranged to be operated either by a spindle and knobs, or by akey.

The letter A designates the bolt, which is properly guided in thelock-case by a'slot, B, and pin O.

The spindle D fits in the`nut E, and the ends of said nut are made toproject through the sides of the lockcase, in the usual manner, so thatthe nut can be rotated by the spindle. Y

Upon the right-hand side of the nut E, observing the drawing, are armsFF, which .extend in opposite directions upward and downward, far`enough to operate the latch-boltA, as hereinafter explained.

The `inner sides ofthe arms F are convex, and form a continuous curve,but their 'sides which are toward the rear part of the'case arestraight; and such straight sides operate against the lips G G', whichproject from thev forked continuations H Hjof the bolt A, in such amanner, that when the spindle D is turned in either direction, they willmove the bolt backward.

The bolt A is' pnshed'forward by a spring, I, in the usual manner, so asto project its bevel-face beyond the face of the case, whenever the boltis not pulled back either by the spindleD, or by the key.

The key-hole is seen at J, being made in a suitable place to enable thekey to act upon the bolt and upon the tulnblers L L, which, according tomy invention, are mounted upon the bolt, by means of a pin, K, so asalways to move wit-h the bolt.

The tuinblers are pressed downward'by their respective springs M, so asto rest upon the stop N.

This stop N supports and guides the tumblers, and also limits theirmovements and that oi' 4the bolt, in their forward and backwardmovements, when the bolt is only operated bythe spindle A, at whichtimes the Shoulders O O come againstV the stop N, and the bolt andtumblers are prevented from any further move-- ment.

Fig. 1 shows the lock in this condition, the bolt being capable of beingoperated both by the spindle D (which i has, on its ends, the usualknobs for handling it) and by a key inserted in the key-hole. y

My invent-ion embraces means for putting the spindle, or its nut, out ofengagement with the bolt, so

that the bolt cannot be operated through the spindle, whether from theoutside or the inside, but can be operated through the key-hole only.

1n carrying out this 'part of my invention, I so construct and arrangethe tumblers, that they can be raised by the key high enough to bringthe shoulders O of the tumblers clear ot the stop N, when, by thefuxther rotation of the key, the bolt and tumblers are pushed backwardor inward, far enough to take the extremities of the forked inner endsot' the bolt beyond the line of the arc described by the arms F of thenut E,so that, by turning the spindle, the ends of either of the saidarms can be carried past the adjacent lip G or G', into the vacant spacebetween such lip and the standard P of the case, where such arm becomesinoperative, and where, also, it becomes locked, by allowing the bolt tomove forward, so as again to bring the shoulders O ofthe tumblers infront of the stop N. In that position, the ordinary play of the boltdoes not carry the bolt far enough back to allow the nut E to assume itsnormal position, but said nut will remain in the diagonal position shownin fig. 2, where it is inoperative, and cannot impart any motion to thebolt.

'lhat arm F of the nut which is turned toward thetumblers, as shown infig. 2, bears against a plate, Q, which is connected to the bolt by thesame pivot K which connects the tumblers to the bolt.

.The pla-te Q is allowed to turn on its pivot, and when an arm of thenut E is thrown inward, as in fig. 2, it presses against said plate, andswings it around against the force of its spring S, to about theposition shown in that figure, the tendency of the spring S,consequently, being to restore the nut to its ordinary straightposition, whenever the upper arm of the nut is released from its lockedposition behind the extremity of the adjacent fork of the bolt, which isdone by again bringing the tumblers high enough to bring their forwardshoulders O above, so as to clear the stop N, and then forcing the boltfar enough backward to take the lip G of the bolt past the adjacent armF of the-nut, when the spring-plate will be allowed to act on the convexside of the lower arm F, and so turn the nut automatically so far as tobring said arm F in front of the said lip G' of the bolt.

When the spindle D is put out of operation, the bolt is controlled andoperated by the key ot' the lock only, and the bolt is then allowed tobe moved by the key, forward far enough to bring the rear shoulder O ofthe tumblers forward of the stop N, when the tumblers will be pusheddownward so as to bring the stop N into the notch T, which is formedbehind said shoulder O. When these parts are in this position, the boltbeCOmeS locked, so that it cannot be pushed inward, or, in other words,cannot be unlocked except by restoring the stop N to its former positionbetween the shoulders 0 O'.

It will be seen, therefore, that by my invention I produce a lock whichcan be operated as an ordinary door-latch, (the face of the bolt beingbevelled, so that it can be moved back by coming in contact with thekeeper,) and also as a spring night-lock, and also as a Y positive lock,or dead-lock.

It will also be observed, that by changing the arrangement or positionoi the spring-plate Q, so that it ,will swing on the upper side of thebolt, instead of on the lower side, the said plate can be made to actagainst the upper arm F of the nut E, and, in that case, the lower arm Fcan be turned outward.

Having thus described my invention,

What l claim as new, and desire to secure by Letters Patent, is-

1. The spring-plate Q, pivoted on the bolt A, in combination with thetwo-armed nut E, substantially as described.

2. The combination of the sliding boltA H H with lips G G', the nut E,with arms F F, on the spindle D, the pivoted spring-tumblers L, withnotch T and stops O O', the stop N, and pivoted spring-plate Q, allconstrueted and arranged, substantially as desi-ribed, to operate eitheras a night-lock,a knob door-latch, or as a positive, or dead-lock, asset forth.

This specification signed by me, this 9th day of January, 1869.

Witnesses: ANTON OOHSNER.

W. HAUFF, ERNEST F. KASTENHUBEB.

